How do I optically connect two Inons Z240 to a Nikon D70

Yes, I have managed to build an optical port for the Ikelite D70 housing (simple way, just a block of nylon worked out to fix two optic cables in front of the camera flash) and I have also manged to tweak the camera's strobe to ire when it is partially open (as the housing does not allow complete rise of the strobe).

And now, the question is... how do I connect my two strobes (Z240 Type I and Z240 Type II) to have S-TTL for macro? Do I have to place the two optic cables in front of the camera's strobe, or do I have to use one as master strobe -connected to the camera- and one as secondary strobe -connected to the master strobe-?

I converted my Subal C40 housing for the 40D to fibre optics last year. Place the ends of the two optic cables so they are pointing at the camera's flash. Set both strobes to sTTL with right hand dial point at "B" to start and make sure the Advanced Cancel Circuit switch (lower right) is in the correct position (out for my 40D/50D but may be different depending on whether your camera's flash has a pre-flash or not).

I could be wrong, but I think the pop-up flash on the D70 needs to be fully extended in order to fire (unlike Gudge's 40D). So you may be out of luck unless you can get the flash all the way extended.

How did you tweak yours to get it to work - that is very interesting!

CheersJames

First check that your pop-up flash is fully functional in the housing. For my D80, I set the flash to the comand mode and the Inons to sTTL. The camera flash is the master and the Inons are ther slaves. Nice work.Bob

Well, yes, normally the pop-up flash must be completely extended to work. But I searched the internet for information on that, and I found some people explaining the functioning of the strobe to solve the problem. I used the info for exactly the opposite: you just need the slightly modify the curve of the switch shown on the attached picture so it closes contact when the strobe is just opened. It has worked perfectly for me.

Ok, so, it seems I should point both optic cables to the pop-up flash.

Gudge, when you say B you mean twelve o'clock? Ok, I was pointing the power dial to Optical TTL (nine) so that may be the reason why I wasn't completely satisfied. Thanks!

I converted my Subal C40 housing for the 40D to fibre optics last year.

I've just been looking at your pics for the conversion. Where did you get the fibre optic bulkheads - is this something you get from Reef etc? I've hada look at their website buut couldn't see anything (although to be honest I can never find anything on there - it's in drastic need to of an overhaul but I digress).

I've just been looking at your pics for the conversion. Where did you get the fibre optic bulkheads - is this something you get from Reef etc? I've hada look at their website buut couldn't see anything (although to be honest I can never find anything on there - it's in drastic need to of an overhaul but I digress).

I've just been looking at your pics for the conversion. Where did you get the fibre optic bulkheads - is this something you get from Reef etc? I've hada look at their website buut couldn't see anything (although to be honest I can never find anything on there - it's in drastic need to of an overhaul but I digress).

Well, yes, normally the pop-up flash must be completely extended to work. But I searched the internet for information on that, and I found some people explaining the functioning of the strobe to solve the problem. I used the info for exactly the opposite: you just need the slightly modify the curve of the switch shown on the attached picture so it closes contact when the strobe is just opened. It has worked perfectly for me.

Ok, so, it seems I should point both optic cables to the pop-up flash.

Gudge, when you say B you mean twelve o'clock? Ok, I was pointing the power dial to Optical TTL (nine) so that may be the reason why I wasn't completely satisfied. Thanks!

Dear LyNCan i do the same with a D200 and D300 to make them fire when only just up so i can fit them in my Subal housing and use d fibreoptic. .

I cant understand the diagram. How does it relate to the pop up flash. What do you have to do to get to the switch to aler it. Thanks

I cant understand the diagram. How does it relate to the pop up flash. What do you have to do to get to the switch to aler it.

The picture shows the inside mechanism of the pop-up flash. You can access it taking out the cover of the flash. This simple switch tells the camera if the pop-up flash is in or out. Normally the part called "operator" moves inside the "switch" and opens and closes it. What I did was, using small pliers, to modify the curve of the "switch" part so that the switch is operated at half extension of the pop-up flash instead of full extension.